Process of manufacturing cyanogen compounds.



H. FOERSTVERLING, H. PHILIP?. RN. SARGENT.

PROCESS 0F MANUFACTURING GYANOGEN COMPOUNDS. 'APPUCATIUN FILED ocLzQ. 1913;

1,23,887. v att-111911 Aufs. T, IH.

`iroi:iasmiaRLrixns, HERBERT ZGn -Of the-Empire of Germany, HER- Bniijr'Pj-.umrr and RALr-H NELSON Samana;

bolthwcitiaens ofthe United States, all residing iiiPerth Amboy, in the county of Mid- .d1, ex and State of New Jersey, have inilyented certain new. and useful Improvemen'tsin Processes of'Manufacturing GyaIienCompoundsLof which the following is 'ajfspecification Y ruit invention relates 'to' the manufacture of'iyanogen compounds and it particularly refrs t`o their vmanufacture by synthesis from the Vrespective constituent elements.

` opending application forU. S. Lettent we describe a process for making en compounds by combining a volatlld'rietahjsuch as for instance an alkali or carbonaceous matter is completely consumed 1n ah ndering same available, we may Justly reprsbnt's, and clearly demonstrates a proc- Uessf-Q 'mbii'stion, in which instead of air, "'tlle vixture iof nitrogen and oxygen, a fluid consisting-f the-vapor of a metal, as for inwe para irfcomtstion'fof :leefbaar-taser the t res active conditions pointed out therein. our invention demands that the metal, the cyano n compound of whichis desired,

lit known that we, HANSV FoERsTERLiNG,

Ovi'irg to' the fact that in this process'the.

andtajotlyisay that the Aprocess forming the- 4o subject-matter or` this invention actually,

. .MB'OY, NEW JERSEY, AssIcNoRs To THR RoEssLER a :"OF NEW YORK, N. Y., n CORPORATION 'OF NEWYORK.

Specification ol Letters Patent.

IHILIIP, AND RALPH N ELSON SARGENT, 0F PERTH HASSLACHER CHEMICAL CO.,

I ROcEss ORMANUFACTURING oYANoGEN COMPOUNDS.

Patented-Aug. 7, i917.

Application inea oetber 2s, 191s. serial No. 798,043. A

that our invention relates primarily to the completely withthe vapors of a cti'on, simultaneously delivering heat be applic in the form of vapor, it is obvious production oil' both alkali and alkali earth cya-nids, as the metals of these groups may be more or lessl easily vaporized; but the production of cyanids of vsuch other metal, forming cyauids and beingV susceptible to volatilization, is also `claimed as coming within the scope of our invention.

The accompanying drawing, which is a vertical sectional view of a suitable reaction vessel surrounded by the furnace-walls, shows one way by means of which our invention may be practised.

The following example for the production of sodium cyanid may serve for the further elucidation of our invention: A Vessel A, of strong construction to satisfactorily stand the Wearand tear of the process and not tov lbe affected by the action of alkali metal vapor or other raw materials nor by the prodnetsw-1? the reaction, is heated to a temperature -in close proximity to the boiling point 4ot' the metal applied, as for instance in the case of applying sodium, to about 800 and by the pipes BLG and D inthe same order they are named below the following substances, viz., sodium vapor,.nitrogen gas and finely divided charcoal are then admitted intothe reaction vessel inthe proper proportion to form sodium cyanid according to the equation: Na-l-G-l-NrNaCN. It is necessary also to-properly disseminatethe 1 finely dividedcharcoal Within they reaction vessel in order to preserve'its reactive prop-4 erties. There are `various substitutes 'for finely divided charcoal, for any carbonaceons matter, segregating carbon in a fine-modification under theconditions prevallili'g' ifi-#190* the reaction vessel, may serve for the pur pose of this process; such substitutes are 4for4 lnstance hydrocarbons, peat-powder, etc.

" It is .furthermore essential for the success i of the process to have an intimate mixture of the sodium vapor and nitrogen gas wherefore both, thou hv not necessarily, en--A i ter the reaction vesse in more or Ilessjolose 1 proxximity, ,for instance the sodjnmyapom 'througlipipe B, through pipe C.

On introduction the elements are readily brought to the point of ignitif` i by the tem perature Within the reaction vessel' and in and Jthe Anitrogen 'gasIQj i i raw materials as to speed or quantity of.

same, or also by controlling the radiation of heatthrough the reaction vessel or by resorting to both means for this latter' purpose. The external heat is shut off as soon as areasonable increase in temperature indicates start of reaction. l

When we state that the process after being started once requires no additional outside heat, it of course must be understood that the materials must be fed at such a rate that the exothermic-heat counterba-lances the heat of radiation of the apparatus.

Our exothermic process can naturally also be carried out in an apparatus designed to radiate the heat to such an extent that it will require outside heat.

Though stated above that the raw materials are applied in quantities according to the equation cited in connection thereto We may state that we found it advisable to use a slight excess of nitrogen gas to prevent the accumulation of unreneted gases; provision for the exitof such gases is made by pipe E. After the reaction is started once the process may be continued without further supply of any external heat as the process,A owing to the heat of reaction, is self-sustaining; and the formed sodium cyanid can be either` continuously orintermittently withdrawn by suitable means, as for instance, the drainage pipe F provided at the bottom of A.

In withdrawing the generated alkali cyanid from the reaction vessel provision must be made for dropping sameinto a vessel or container which is at a temperature lower i than the decomposition point of alkali cyanid.

:It is obvious that the process described above may be carried out in any suitable apparatus which will readily allow the various anvsource whatever which in regard to its origin and character naturally :must be fun damentally different from the lieatfurnished A by the energy of the reaction, the method of Leases? obtaining said latter kind of heat and its utilizationlforming one of the main parts of the subject matter of this invention.v

Ve claim:

1. r1 he exothermic process of making..

c anogen compounds, consisting in b ringin t e theoretical quantities of their finely d1- vided constituents into reaction, rendering available'the heat generated by said reaction und makina' the .process substantially selfsnstaining y means of said heat of reaction. 1

2, The exot-hermic process' of making cyanogen compounds, consisting in kacting I with finely divided carbon on nitrogen and the vapors of a metal susceptible to volatilizationv in theoretical proportions,` rendering the heat of reaction available by eontinuously maintainin the aforesaid theoretical quantities of t e constituents at approximately the boiling point of the applied metal, and promoting the combinatlon of further quantities of the same by means of the heat of the reaction.

' 3. The exothermie process of making cyanogen compounds, consisting in combining in theoretical quantities finely divided carbon with nitrogen and the vapors of a metal susceptible to volatilization -at 'a temperature in close proximity to the boiling point of theapplied suitable metal, generating heat by the reaction between the aforesaid elements, discontinuing the supply of outside heat upon a. reasonable increase of temperature indicating start of reaction and sustaining the further operation of the process by the available 4heat of reaction.

4.- The exothermic process of making cyanogen compounds, consisting in combining in theoretical quantities finely divided carbon with nitrogen and the vapors of a metal susceptible to volatilization at a temperature in close proximityto the boiling point of the applied metal; generating heat by the reaction between the aforesaid elements; discontinuingl Athe supply of outside peut. upon a reasonable increase of temperature indicating start of reaction, sustaining the further operation of the proeess by the available heat of reaction and regulating the temperature by varying the feed of raw materials as to speed and qualitity. Y

5. The exothermic .process of making cyanogen compounds, consisting in combi'nl ingr in theoreticz'il quantities finely divided carbon with nitrogen and the vaporsof a metal susceptible to volatilization at a temperature in close proximity to the boiling point of the respective metal and rendermg available the heat generated by said reaction, the'dissemination ofthe finely divided rarbon to preserve its reactive power.

6. 'lhe exothermic process of making cyanogen compounds, consisting in combinvolatilization at .a temperature in close proximityto the boiling. point of the said.l volatile metal.k

7.` The exothermic process oty making .Jalkali metal cyanid, consisting in bringing theoretical quantities of finely divided ca`r bon, nitrogen Aand of the 4vapor of ther respectivealkali .metal inI reactionand liberating heat thereby.

f 8. The exothermic vprocess of making tive alkali Lmetal iiiv reaction,

bai

, applied -alkali alkali metal cyanid, consisting in'bringing theoretical lquantities of finely divided carnitrogen -andthe vapor of the respecrendering available the heat generated by said reaction and making the process selfesustaining by means of said` heat of 'reaction' bon,

9. The exothermic process of making,

alkali metal cyanid, consisting in combining in theoretical quantitiesV finely divided carbon with nitrogen and the vapors ofthe respective alkali metal at a temperature in close proximity to the boiling point of the metal thereby rendering available the heat liberated 'by the reaction.

10. The exothermic process of `making cyanogen compounds, ing in theoretical quantities finely divided carbon with nitrogen and the vapors of the respective alkali metal' at a temperature in close proximity to the boiling point of the applied ,alkali metal,` generating heat by the reaction between the aforesaid elements and promoting the combination of further `quantities of-same by means of the heat of reaction. y

11. The exothermic process yof making alkali metal cyanids', consisting in combining in theoretical quantitiesiinely d1v`ided carbon with nitrogen andthe vapors of an alkali metal at a temperature in close proximity to the boiling Ypoint of the applied metal, generating heat by the reaction between the aforesaid elements, discontinuing the supply of outside'heat upon a reasonable increase of temperature start of reaction and sustaining the further operation of the `process by the available the reaction further operation heat of reaction.

` 12. The exothermic process of niaking alkali metal eyanids, consisting. 1n combining in theoretical quantities finely divided carbon with nitrogen and thevapors of the respective alkali metal` at a temperature 1n close proximityto the boiling point of the applied alkali metal, generating heat by between the aforesaid elements, discontinuing the supply of outside heat upon a reasonable increase of temperature of reaction, sustaining the indicating' start c of the process by the materials as t0 speed and quantity.

1B. The exotherinic process of making 4eeous matter which will segregate consisting in combin-` indicating available heatof reaction' and regulating the temperature by varying the feed of raw alkali "metal cyanids consisting inl .acti at` atemperature' in close prxiinit" td boiling point ofthe appliedfalka p uponwlheoretical quantities of a"^cz`i the prevailing temperature, nitd the aforesaidz'alkali metal, -saidalk i being in form'of vapor.

14. The exothermic process omaki dium cyanid, consstin in brin'gi i-etieal quantities" of so( iumvapo action with suchof nitrogen and vided carbon and rendering thev h erated thereby available. f

15. The exoth ermic""processV of "makiiig dium cyanid, consisting in'hrfinging cal' quantities o'sodium vapor into'rea t with such of nitrogen and finely divided p p carbon by said reaction and rendering avail-y able the heat generated, making the process self-sustaining by means of said heat of re-Y action. i

16.- 'lhe exotliermic process of making sodium cyanid, consisting in combining in A theoretical quantities yfinely divided carbon with nitrogen and sodium vapor at a tem` perature in close proximity to the 'boiling point of sodium, generating heat by thereaction between 'the aforesaid elements and promoting the combination of further quan-- tities of same by means ofthe heat of reaction.

dium c yanid, consisting in combining in theoretical quantitiesviinely divided carbon with nitrogen and sodium vapor at a temperature in close proximity to the boiling point of sodium, generating heat by thereaction between the aforesaid elements, dis-V continuing the supply of outside heat upon a reasonable increase of temperaure indicating start of reaction and sustaining the `further operation of the process by the available heat of reaction.

18. The exothermie process of making so# dium eyanid, consisting in combining in theoreticalquantities finely divided carbon with nitrogen and sodium vapor at a tem-v perature in Vclose proximity to 'the bpiling point of sodium, generating heat by the reaction vbetween the aforesaid elements, dis-1 continuing the supply of outsideheat upon a reasonable increase of temperature indicating start of reaction, sustaining the further operation of the process by the available heat of reaction and regulating` the temperature by varying the feed of raw.l materials as to speed and quantity.

19. The methodlofg'enerating heat, consisting in combining carbon in a suitable form with nitrogen and a volatile metal,

17. The exotliermio process of making soiio iis

able to form a vcyenogen compound, at a temperature incluse proximity to the boiling point of said Volatile metal, and separating the residue in the form of such cyanogen compounds.

20. The method of generating heat, consisting in combining carbon in a suitable .boiling point of form with nitrogen and the Vapor of a metal. able to form a cyanogen compound, at a temperature in vclose proximity to the said volatile metal, and separating the residue in the form of such cyanogen compounds.

21 he method of generating heat, oonsisting in combining carbon in a suitable form with nitrogen and the vapor of an 22. The method of ipsum? y,

alkali metal at a temperature in close' proximity to the boiling point of the respective alkali metal, forming an alkali meta and separating the residue cyam 2o generating heat, con-4 o 

